title: Redesigning fraternal birth order studies from top to bottom.
authors.affiliation: , 41 South Harrison St., Princeton, NJ, 08540, USA, chwampold@mail.widener.edu.
authors.forename: Charles H
authors.initials: CH
authors.lastname: Wampold
mesh_terms: D001722:Birth Order; D003075:Coitus / Q000523:psychology*; D005260:Female; D005783:Gender Identity; D018451:Homosexuality, Male / Q000523:psychology*; D006801:Humans; D008297:Male; D010551:Personality; D012744:Sex Ratio; D014189:Transsexualism / Q000175:diagnosis*